Note 11 - Retirement Benefits - Funded Status for US and Foreign Pension Plan (Details) - UNITED STATES - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Prepaid benefit cost	$ 5,823	$ 6,295
Current liabilities	(521)	(456)
Non-current liabilities	(46,602)	(47,695)
Net amount recognized	$ (41,300)	$ (41,856)

Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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